Honestly I do see the point but it's pretty much bull snit, when I was younger my gramps worked 13 hour shifts as a truck driver. I worked 12 hours shifts for three years, never had to take a nap in my car just to get throught the day.

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"ever man out here has a timer, no one know how long it will take but no one last forever"
Sargent Miller

"cake or death! I'll have the cake then... SORRY WHERE OUT OF CAKE!... so it's or death? I'll have the chicken then please." Eddy Izzard

"so a suppose your going to kill me now? no he is I'm just here to watch"

"you know why guns are better then a woman?... you can put a silencer on a gun."

The key is the lack of work. These guys are not busy and falling asleep, it's the fact that they are on shift for 12 hours but only work 5 minutes. Going uncontrolled is probably the safest and least expensive solution available. Most airports are actually uncontrolled at night, in fact many/most are uncontrolled during the day they are just not that busy.